Alternatively, by comparing the experiences of identical twins with those of fraternal twins ... "And I came back to that nature versus nurture thing." The push and pull between genetics and ...

Every pair of twins is special at the annual Twins Days Festival in Ohio. But fraternal twins say identicals get the star treatment. WSJ's Dionne Searcey reports from Twinsburg.

Counting On sibling Jedidiah Duggar and his wife, Katelyn Nakatsu, welcomed fraternal twin girls earlier this month.

But then one of those twin embryos splits into another ... it’s difficult to parse out exactly how many triplet births are ...

and there are two main types of twins; identical and fraternal. Identical twins result from a single fertilised egg that splits to form two embryos. As a result, these twins are identical in sex ...

Twin registries are found throughout the world, all following thousands of identical and fraternal twins ... different adoptive parents--affluent versus non-affluent. This study was reported ...

There are two types of twins, identical and fraternal twins. Identical twins develop from one egg; the egg is fertilized by the sperm then divides into two. Identical twins are similar in ...

Twin registries are found throughout the world, all following thousands of identical and fraternal twins ... different adoptive parents--affluent versus non-affluent. This study was reported ...